hyposphene下: below; down; under; undernea ...楔: wedge peg安全钳下楔: safety plank下楔材料: lower chord固定上下楔块: fix the upper and lower wedges下载手机词典可随时随地查词查翻译关注微信公众号：chachacidian，回复:下楔，即可在微信中查询翻译
